/**
 * Copyright 2023-present DreamNum Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { type ISequenceNode, matchToken, sequenceNodeType } from '@univerjs/engine-formula';

export type INode = (string | ISequenceNode);
export const isComma = (e: INode) => {
    if (typeof e === 'string') {
        return e === matchToken.COMMA;
    }
    return false;
};
export const isReference = (e: INode) => {
    if (typeof e === 'object') {
        return e.nodeType === sequenceNodeType.REFERENCE;
    }
};
export const filterReferenceNode = (nodes: INode[]) => {
    return nodes.filter((node) => isComma(node) || isReference(node));
};
